The primary ingredient in a Greek salad is cucumbers. This refreshing salad typically features a combination of chopped cucumbers, tomatoes, red onions, olives, and feta cheese, often dressed with olive oil and seasoned with oregano. Cucumbers provide a crisp texture and hydrating properties, making them perfect for this light dish. Greek salad is not only delicious but also embodies the Mediterranean diet's emphasis on fresh, healthy ingredients. It is widely enjoyed around the world for its simplicity and vibrant flavors, often served as a side dish or a light meal.